Hey Dad! actor Sarah Monahan speaks out

Sarah Monahan, the former co-star of Hey Dad! who was among Robert Hughes' child sex abuse victims, said she would not pursue civil action against Channel Seven, but hopes the television network apologises publicly.

Ms Monahan, who spurred the investigation into Hughes four years ago when she aired allegations about his behaviour in a television interview, said on Wednesday night she felt vindicated now he had been convicted.

Sarah Monahan seen here as a child star with the cast from Hey Dad!. She's on Robert Hughes' right. Photo: Supplied

The disgraced actor found guilty of 10 child sex charges this week.

The crimes were committed between 1984 and 1991.

Ms Monahan played Hughes' youngest daughter on the popular sitcom and said she would like to see Channel Seven, which produced the show, admit its culpability.

"It would be nice if Channel Seven stood up and said we did the wrong thing," she said in an interview with her fellow former co-stars on Channel Nine.

But she would not be pursuing any further legal action, she said.

"I don't want to deal with court any more," she said.

Fellow actors Simone Buchanan and Ben Oxenbould said they had been ostracised for publicly supporting Ms Monahan and speaking out against Hughes. Their acting careers had also been affected.

Mr Oxenbould said when he spoke up about Hughes to the show's producers while the show was still in production, the message he got was: "Shut up about the paedophile".

"A small part of me wanted to see him suffer," Mr Oxenbould said of Hughes' convictions this week. He described the 65-year-old as "very cunning" and "very manipulative".

Ms Monahan said she hopes Hughes, who is in custody awaiting sentence on May 2, serves time in prison.